Perby c



P.'O. wOOOs. :NTERNVAL COMOUSTIONYENGINE.

APPLICATION man nEc.13. 19m. A 1,328,139, Patented N0v.25,1.91O.

, www

P. C. WOODS.

INIERNAL comusloN ENGINE.

APPLICATION FILED DEC. 13, IQIG.

Patented Nov. 25, 1919.

l SHEETS-SHED 2.

R @,'Wdilvci s PERRY C. WOODS, OF WASHINGTON, IOWA.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Nov. 25, 1919.

Application filed December 13y 1916. Serial No. 136,666.

To all whom 'it may concern:

Be it known that I, lmnu' C. lVooDs, a citizen of the United States, residing at lVashington, in the county of lVashington and State of Iowa, have invented certain new and useful Improvements in Internal- Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it appertains to make and use' the same.

This invention relates to improvements in internal combustion engines, and has for its object to provide an improved engine in which the compressed charge in the working cylinder is ignited by the combustion of fuel in an auxiliary high pressure cylinder.

Another object is the provision of a novel valve structure for controlling the discharge of the combustion from the high pressure cylinder to the working cylinder.

With these and other objects in View, the invention consists in the novel construction, combination and arrangement of parts as will be hereinafter specifically described, claimed and illustrated inthe accompanying drawings, in which:

Figure 1 represents a side elevation, partly in section, of the im roved engine.

Fig. 2 re rescnts a front e evation thereof, partly bro ien away.

g Fig. 3 represents an enlarged sectional 'view through the cylinder of the engine.

Fig. 4v re )resent-s a transterse sectional view throng the head of the cylinder.

Referring to the drawings in detail, wherein similar reference numerals designate corresponding parts throughout the several views, the numeral 5 indicates a main or workingcylinder of the engine, which is preferably of the double walled type, providing the water chamber G, by which the engine is cooled during operation. The piston 7 is reciprocably mounted in `the cylinder 5 and is connected with a piston rod 8 which is pivotally connected at to the connecting rod 10. The terminal of the connecting rod 10 opposite the piston 7 is connected `with the crank pin 11 of the crank shaft 12, which latter is supported in suitable bearings.

The head of the cylinder 5 is formed with an exhaust port in which is arranged an exhaust valve 6, which may be operated'by any approved type of valve operating mechanism (not shown). The head is also provided with an inlet port 13, which is restricted adjacent its outer terminal to present an inclined valve seat 15, with which is engaged the inlet valve 16. An auxiliary or high pressure cylinder 17 is formed integral with the working cylinder 5 and is of considerably less internal diameter than the cylinder 5. A piston 18 is rcciprocably mounted in the cylinder 17 and is connected with a rod 19, having pivotal connection at Q0 with the angular terminal 210i' an arm 22, rigidly connected with the connecting rod 10 of the main piston 7.

The upper end or combustion chamber of the cylinder 17 communicates with the inlet port 13 by a tapered port 23, forming a seat for the tapered terminal of a needle valve- 24, which is slidably mounted in the head of the cylinder.

A rocker arm 25 is pivotally secured to a supporting bracket 26 attached to the cylinder 5, and is engaged at one end with the upper terminal of the needle valve 24 and Vat its opposite end with a push rod 27, slidably supported in guides27a and engaged at its lower terminal with a cam 28 carried by the crank shaft 12.

In operation, the explosive mixture is drawn into the cylinders 5 and 17 through the ports 13 and :23, during the suction stroke of the pistons 7 and 18, and during the subsequent compression stroke the charge is compressed. During the compression stroke of the high pressure pistonlS the needle valve 24 is retained in closed position by the cani SS operating upon the rod Q7 and rocker arm 25. During the compression stroke ofthe high pressureV piston 18 the mixture contained in the explosionchamber thereof is compressed 'to such a degree that the mixture is ignited and the fire from the explosion is directed through the ports 23 and 13 and into the main cylinder 5, Where it ignites the compressed charge in the main cylinder operating the piston 7. It will be understood that the needle valve 24 is automatically released by the cam 28 at the time of the explosion of the charge in the high pressure cylinder 17 and the force of the explosion automatically opens the Valve 24.

lVhat I claim is:

An internal combustion engine including a main cylinder having intake and exhaust ports and a piston provided with a piston rod operable within the main cylinder, means controlling said ports, an auxiliary cylinder, :i piston rod for said second nien! tioned piston. 'u connectnn;r rod pimtud to the piston rod ofthe first nui'ncd pitun und adapted t0 be connected to :i crunk snuit. a

Asubstzintially .L-shapedv 'a'rn'i formed on the 'cnnecting rod and pivote'dto the piston rnd of the second nnmedpston, und :L needle 10 rvulve adapted to control the, poi-tvs from the auxiliary cylinder to the intake' port. Y

In testimony 'whereof I :itiiX my signature in presence of two witnesses.

PERRY (l. W'OODS. Witnesses (hmmm MORRISON, iV-ALTi-:n L. JouxsoN. 

